Provide a rich type and converter to be used by properties that configure a number of bytes

[wilkinsona]

We have a few places where you can use things like 1MB or 8KB and we'll parse that into the right number of bytes. We'd like to formalise this in a similar way to what we did for Duration so it's not just specific to one or two properties.

[snicoll]

We're considering moving the data type itself in Spring Framework as it could be reused in other places, see SPR-17154 for more details.